[mirror_edk2.git] / ShellPkg / Library / UefiShellAcpiViewCommandLib / Parsers / Gtdt / GtdtParser.c

/** @file\r
  GTDT table parser\r
\r
  Copyright (c) 2016 - 2019, ARM Limited. All rights reserved.\r
  SPDX-License-Identifier: BSD-2-Clause-Patent\r
\r
  @par Reference(s):\r
    - ACPI 6.3 Specification - January 2019\r
  **/\r
\r
#include <IndustryStandard/Acpi.h>\r
#include <Library/UefiLib.h>\r
#include "AcpiParser.h"\r
#include "AcpiTableParser.h"\r
\r
// "The number of GT Block Timers must be less than or equal to 8"\r
#define GT_BLOCK_TIMER_COUNT_MAX 8\r
\r
// Local variables\r
STATIC CONST UINT32* GtdtPlatformTimerCount;\r
STATIC CONST UINT32* GtdtPlatformTimerOffset;\r
STATIC CONST UINT8*  PlatformTimerType;\r
STATIC CONST UINT16* PlatformTimerLength;\r
STATIC CONST UINT32* GtBlockTimerCount;\r
STATIC CONST UINT32* GtBlockTimerOffset;\r
STATIC CONST UINT16* GtBlockLength;\r
STATIC ACPI_DESCRIPTION_HEADER_INFO AcpiHdrInfo;\r
\r
/**\r
  This function validates the GT Block timer count.\r
\r
  @param [in] Ptr     Pointer to the start of the field data.\r
  @param [in] Context Pointer to context specific information e.g. this\r
                      could be a pointer to the ACPI table header.\r
**/\r
STATIC\r
VOID\r
EFIAPI\r
ValidateGtBlockTimerCount (\r
  IN UINT8* Ptr,\r
  IN VOID*  Context\r
  )\r
{\r
  UINT32 BlockTimerCount;\r
\r
  BlockTimerCount = *(UINT32*)Ptr;\r
\r
  if (BlockTimerCount > GT_BLOCK_TIMER_COUNT_MAX) {\r
    IncrementErrorCount ();\r
    Print (\r
      L"\nERROR: Timer Count = %d. Max Timer Count is %d.",\r
      BlockTimerCount,\r
      GT_BLOCK_TIMER_COUNT_MAX\r
      );\r
  }\r
}\r
\r
/**\r
  This function validates the GT Frame Number.\r
\r
  @param [in] Ptr     Pointer to the start of the field data.\r
  @param [in] Context Pointer to context specific information e.g. this\r
                      could be a pointer to the ACPI table header.\r
**/\r
STATIC\r
VOID\r
EFIAPI\r
ValidateGtFrameNumber (\r
  IN UINT8* Ptr,\r
  IN VOID*  Context\r
  )\r
{\r
  UINT8 FrameNumber;\r
\r
  FrameNumber = *(UINT8*)Ptr;\r
\r
  if (FrameNumber >= GT_BLOCK_TIMER_COUNT_MAX) {\r
    IncrementErrorCount ();\r
    Print (\r
      L"\nERROR: GT Frame Number = %d. GT Frame Number must be in range 0-%d.",\r
      FrameNumber,\r
      GT_BLOCK_TIMER_COUNT_MAX - 1\r
      );\r
  }\r
}\r
\r
/**\r
  An ACPI_PARSER array describing the ACPI GTDT Table.\r
**/\r
STATIC CONST ACPI_PARSER GtdtParser[] = {\r
  PARSE_ACPI_HEADER (&AcpiHdrInfo),\r
  {L"CntControlBase Physical Address", 8, 36, L"0x%lx", NULL, NULL,\r
   NULL, NULL},\r
  {L"Reserved", 4, 44, L"0x%x", NULL, NULL, NULL, NULL},\r
  {L"Secure EL1 timer GSIV", 4, 48, L"0x%x", NULL, NULL, NULL, NULL},\r
  {L"Secure EL1 timer FLAGS", 4, 52, L"0x%x", NULL, NULL, NULL, NULL},\r
\r
  {L"Non-Secure EL1 timer GSIV", 4, 56, L"0x%x", NULL, NULL, NULL, NULL},\r
  {L"Non-Secure EL1 timer FLAGS", 4, 60, L"0x%x", NULL, NULL, NULL, NULL},\r
\r
  {L"Virtual timer GSIV", 4, 64, L"0x%x", NULL, NULL, NULL, NULL},\r
  {L"Virtual timer FLAGS", 4, 68, L"0x%x", NULL, NULL, NULL, NULL},\r
\r
  {L"Non-Secure EL2 timer GSIV", 4, 72, L"0x%x", NULL, NULL, NULL, NULL},\r
  {L"Non-Secure EL2 timer FLAGS", 4, 76, L"0x%x", NULL, NULL, NULL, NULL},\r
\r
  {L"CntReadBase Physical address", 8, 80, L"0x%lx", NULL, NULL, NULL, NULL},\r
  {L"Platform Timer Count", 4, 88, L"%d", NULL,\r
   (VOID**)&GtdtPlatformTimerCount, NULL, NULL},\r
  {L"Platform Timer Offset", 4, 92, L"0x%x", NULL,\r
   (VOID**)&GtdtPlatformTimerOffset, NULL, NULL},\r
  {L"Virtual EL2 Timer GSIV", 4, 96, L"0x%x", NULL, NULL, NULL, NULL},\r
  {L"Virtual EL2 Timer Flags", 4, 100, L"0x%x", NULL, NULL, NULL, NULL}\r
};\r
\r
/**\r
  An ACPI_PARSER array describing the Platform timer header.\r
**/\r
STATIC CONST ACPI_PARSER GtPlatformTimerHeaderParser[] = {\r
  {L"Type", 1, 0, NULL, NULL, (VOID**)&PlatformTimerType, NULL, NULL},\r
  {L"Length", 2, 1, NULL, NULL, (VOID**)&PlatformTimerLength, NULL, NULL},\r
  {L"Reserved", 1, 3, NULL, NULL, NULL, NULL, NULL}\r
};\r
\r
/**\r
  An ACPI_PARSER array describing the Platform GT Block.\r
**/\r
STATIC CONST ACPI_PARSER GtBlockParser[] = {\r
  {L"Type", 1, 0, L"%d", NULL, NULL, NULL, NULL},\r
  {L"Length", 2, 1, L"%d", NULL, (VOID**)&GtBlockLength, NULL, NULL},\r
  {L"Reserved", 1, 3, L"%x", NULL, NULL, NULL, NULL},\r
  {L"Physical address (CntCtlBase)", 8, 4, L"0x%lx", NULL, NULL, NULL, NULL},\r
  {L"Timer Count", 4, 12, L"%d", NULL, (VOID**)&GtBlockTimerCount,\r
   ValidateGtBlockTimerCount, NULL},\r
  {L"Timer Offset", 4, 16, L"%d", NULL, (VOID**)&GtBlockTimerOffset, NULL,\r
    NULL}\r
};\r
\r
/**\r
  An ACPI_PARSER array describing the GT Block timer.\r
**/\r
STATIC CONST ACPI_PARSER GtBlockTimerParser[] = {\r
  {L"Frame Number", 1, 0, L"%d", NULL, NULL, ValidateGtFrameNumber, NULL},\r
  {L"Reserved", 3, 1, L"%x %x %x", Dump3Chars, NULL, NULL, NULL},\r
  {L"Physical address (CntBaseX)", 8, 4, L"0x%lx", NULL, NULL, NULL, NULL},\r
  {L"Physical address (CntEL0BaseX)", 8, 12, L"0x%lx", NULL, NULL, NULL,\r
    NULL},\r
  {L"Physical Timer GSIV", 4, 20, L"0x%x", NULL, NULL, NULL, NULL},\r
  {L"Physical Timer Flags", 4, 24, L"0x%x", NULL, NULL, NULL, NULL},\r
  {L"Virtual Timer GSIV", 4, 28, L"0x%x", NULL, NULL, NULL, NULL},\r
  {L"Virtual Timer Flags", 4, 32, L"0x%x", NULL, NULL, NULL, NULL},\r
  {L"Common Flags", 4, 36, L"0x%x", NULL, NULL, NULL, NULL}\r
};\r
\r
/**\r
  An ACPI_PARSER array describing the Platform Watchdog.\r
**/\r
STATIC CONST ACPI_PARSER SBSAGenericWatchdogParser[] = {\r
  {L"Type", 1, 0, L"%d", NULL, NULL, NULL, NULL},\r
  {L"Length", 2, 1, L"%d", NULL, NULL, NULL, NULL},\r
  {L"Reserved", 1, 3, L"%x", NULL, NULL, NULL, NULL},\r
  {L"RefreshFrame Physical address", 8, 4, L"0x%lx", NULL, NULL, NULL, NULL},\r
  {L"ControlFrame Physical address", 8, 12, L"0x%lx", NULL, NULL, NULL, NULL},\r
  {L"Watchdog Timer GSIV", 4, 20, L"0x%x", NULL, NULL, NULL, NULL},\r
  {L"Watchdog Timer Flags", 4, 24, L"0x%x", NULL, NULL, NULL, NULL}\r
};\r
\r
/**\r
  This function parses the Platform GT Block.\r
\r
  @param [in] Ptr     Pointer to the start of the GT Block data.\r
  @param [in] Length  Length of the GT Block structure.\r
**/\r
STATIC\r
VOID\r
DumpGTBlock (\r
  IN UINT8* Ptr,\r
  IN UINT32 Length\r
  )\r
{\r
  UINT32 Index;\r
  UINT32 Offset;\r
  UINT32 GTBlockTimerLength;\r
\r
  Offset = ParseAcpi (\r
             TRUE,\r
             2,\r
             "GT Block",\r
             Ptr,\r
             Length,\r
             PARSER_PARAMS (GtBlockParser)\r
             );\r
  GTBlockTimerLength = (*GtBlockLength - Offset) / (*GtBlockTimerCount);\r
  Length -= Offset;\r
\r
  if (*GtBlockTimerCount != 0) {\r
    Ptr += (*GtBlockTimerOffset);\r
    Index = 0;\r
    while ((Index < (*GtBlockTimerCount)) && (Length >= GTBlockTimerLength)) {\r
      Offset = ParseAcpi (\r
                 TRUE,\r
                 2,\r
                 "GT Block Timer",\r
                 Ptr,\r
                 GTBlockTimerLength,\r
                 PARSER_PARAMS (GtBlockTimerParser)\r
                 );\r
      // Increment by GT Block Timer structure size\r
      Ptr += Offset;\r
      Length -= Offset;\r
      Index++;\r
    }\r
\r
    if (Length != 0) {\r
      IncrementErrorCount ();\r
      Print (\r
        L"ERROR:GT Block Timer length mismatch. Unparsed %d bytes.\n",\r
        Length\r
        );\r
    }\r
  }\r
}\r
\r
/**\r
  This function parses the Platform Watchdog timer.\r
\r
  @param [in] Ptr     Pointer to the start of the watchdog timer data.\r
  @param [in] Length  Length of the watchdog timer structure.\r
**/\r
STATIC\r
VOID\r
DumpWatchdogTimer (\r
  IN UINT8* Ptr,\r
  IN UINT16 Length\r
  )\r
{\r
  ParseAcpi (\r
    TRUE,\r
    2,\r
    "SBSA Generic Watchdog",\r
    Ptr,\r
    Length,\r
    PARSER_PARAMS (SBSAGenericWatchdogParser)\r
    );\r
}\r
\r
/**\r
  This function parses the ACPI GTDT table.\r
  When trace is enabled this function parses the GTDT table and\r
  traces the ACPI table fields.\r
\r
  This function also parses the following platform timer structures:\r
    - GT Block timer\r
    - Watchdog timer\r
\r
  This function also performs validation of the ACPI table fields.\r
\r
  @param [in] Trace              If TRUE, trace the ACPI fields.\r
  @param [in] Ptr                Pointer to the start of the buffer.\r
  @param [in] AcpiTableLength    Length of the ACPI table.\r
  @param [in] AcpiTableRevision  Revision of the ACPI table.\r
**/\r
VOID\r
EFIAPI\r
ParseAcpiGtdt (\r
  IN BOOLEAN Trace,\r
  IN UINT8*  Ptr,\r
  IN UINT32  AcpiTableLength,\r
  IN UINT8   AcpiTableRevision\r
  )\r
{\r
  UINT32 Index;\r
  UINT8* TimerPtr;\r
\r
  if (!Trace) {\r
    return;\r
  }\r
\r
  ParseAcpi (\r
    TRUE,\r
    0,\r
    "GTDT",\r
    Ptr,\r
    AcpiTableLength,\r
    PARSER_PARAMS (GtdtParser)\r
    );\r
\r
  if (*GtdtPlatformTimerCount != 0) {\r
    TimerPtr = Ptr + (*GtdtPlatformTimerOffset);\r
    Index = 0;\r
    do {\r
      // Parse the Platform Timer Header\r
      ParseAcpi (\r
        FALSE,\r
        0,\r
        NULL,\r
        TimerPtr,\r
        4,  // GT Platform Timer structure header length.\r
        PARSER_PARAMS (GtPlatformTimerHeaderParser)\r
        );\r
      switch (*PlatformTimerType) {\r
        case EFI_ACPI_6_2_GTDT_GT_BLOCK:\r
          DumpGTBlock (TimerPtr, *PlatformTimerLength);\r
          break;\r
        case EFI_ACPI_6_2_GTDT_SBSA_GENERIC_WATCHDOG:\r
          DumpWatchdogTimer (TimerPtr, *PlatformTimerLength);\r
          break;\r
        default:\r
          IncrementErrorCount ();\r
          Print (\r
            L"ERROR: INVALID Platform Timer Type = %d\n",\r
            *PlatformTimerType\r
            );\r
          break;\r
      } // switch\r
      TimerPtr += (*PlatformTimerLength);\r
      Index++;\r
    } while (Index < *GtdtPlatformTimerCount);\r
  }\r
}\r
Commit	Line	Data
a6eaba4d	1	/** @file\r
ee4dc24f RN	2	GTDT table parser\r
ee4dc24f RN	3	\r
8da8daaf	4	Copyright (c) 2016 - 2019, ARM Limited. All rights reserved.\r
56ba3746	5	SPDX-License-Identifier: BSD-2-Clause-Patent\r
ee4dc24f RN	6	\r
ee4dc24f RN	7	@par Reference(s):\r
98f98eb4	8	- ACPI 6.3 Specification - January 2019\r
ee4dc24f RN	9	**/\r
	10	\r
	11	#include <IndustryStandard/Acpi.h>\r
	12	#include <Library/UefiLib.h>\r
	13	#include "AcpiParser.h"\r
	14	#include "AcpiTableParser.h"\r
	15	\r
2a219e19 KK	16	// "The number of GT Block Timers must be less than or equal to 8"\r
	17	#define GT_BLOCK_TIMER_COUNT_MAX 8\r
	18	\r
ee4dc24f RN	19	// Local variables\r
	20	STATIC CONST UINT32* GtdtPlatformTimerCount;\r
	21	STATIC CONST UINT32* GtdtPlatformTimerOffset;\r
	22	STATIC CONST UINT8* PlatformTimerType;\r
	23	STATIC CONST UINT16* PlatformTimerLength;\r
	24	STATIC CONST UINT32* GtBlockTimerCount;\r
	25	STATIC CONST UINT32* GtBlockTimerOffset;\r
	26	STATIC CONST UINT16* GtBlockLength;\r
	27	STATIC ACPI_DESCRIPTION_HEADER_INFO AcpiHdrInfo;\r
	28	\r
a6eaba4d DB	29	/**\r
a6eaba4d DB	30	This function validates the GT Block timer count.\r
ee4dc24f RN	31	\r
	32	@param [in] Ptr Pointer to the start of the field data.\r
	33	@param [in] Context Pointer to context specific information e.g. this\r
	34	could be a pointer to the ACPI table header.\r
a6eaba4d	35	**/\r
ee4dc24f RN	36	STATIC\r
	37	VOID\r
	38	EFIAPI\r
	39	ValidateGtBlockTimerCount (\r
	40	IN UINT8* Ptr,\r
	41	IN VOID* Context\r
2a219e19 KK	42	)\r
	43	{\r
	44	UINT32 BlockTimerCount;\r
	45	\r
	46	BlockTimerCount = (UINT32)Ptr;\r
	47	\r
	48	if (BlockTimerCount > GT_BLOCK_TIMER_COUNT_MAX) {\r
	49	IncrementErrorCount ();\r
	50	Print (\r
	51	L"\nERROR: Timer Count = %d. Max Timer Count is %d.",\r
	52	BlockTimerCount,\r
	53	GT_BLOCK_TIMER_COUNT_MAX\r
	54	);\r
	55	}\r
	56	}\r
ee4dc24f	57	\r
8da8daaf KK	58	/**\r
	59	This function validates the GT Frame Number.\r
	60	\r
	61	@param [in] Ptr Pointer to the start of the field data.\r
	62	@param [in] Context Pointer to context specific information e.g. this\r
	63	could be a pointer to the ACPI table header.\r
	64	**/\r
	65	STATIC\r
	66	VOID\r
	67	EFIAPI\r
	68	ValidateGtFrameNumber (\r
	69	IN UINT8* Ptr,\r
	70	IN VOID* Context\r
2a219e19 KK	71	)\r
	72	{\r
	73	UINT8 FrameNumber;\r
	74	\r
	75	FrameNumber = (UINT8)Ptr;\r
	76	\r
	77	if (FrameNumber >= GT_BLOCK_TIMER_COUNT_MAX) {\r
	78	IncrementErrorCount ();\r
	79	Print (\r
	80	L"\nERROR: GT Frame Number = %d. GT Frame Number must be in range 0-%d.",\r
	81	FrameNumber,\r
	82	GT_BLOCK_TIMER_COUNT_MAX - 1\r
	83	);\r
	84	}\r
	85	}\r
8da8daaf	86	\r
a6eaba4d DB	87	/**\r
	88	An ACPI_PARSER array describing the ACPI GTDT Table.\r
	89	**/\r
ee4dc24f RN	90	STATIC CONST ACPI_PARSER GtdtParser[] = {\r
	91	PARSE_ACPI_HEADER (&AcpiHdrInfo),\r
	92	{L"CntControlBase Physical Address", 8, 36, L"0x%lx", NULL, NULL,\r
	93	NULL, NULL},\r
	94	{L"Reserved", 4, 44, L"0x%x", NULL, NULL, NULL, NULL},\r
	95	{L"Secure EL1 timer GSIV", 4, 48, L"0x%x", NULL, NULL, NULL, NULL},\r
	96	{L"Secure EL1 timer FLAGS", 4, 52, L"0x%x", NULL, NULL, NULL, NULL},\r
	97	\r
	98	{L"Non-Secure EL1 timer GSIV", 4, 56, L"0x%x", NULL, NULL, NULL, NULL},\r
	99	{L"Non-Secure EL1 timer FLAGS", 4, 60, L"0x%x", NULL, NULL, NULL, NULL},\r
	100	\r
	101	{L"Virtual timer GSIV", 4, 64, L"0x%x", NULL, NULL, NULL, NULL},\r
	102	{L"Virtual timer FLAGS", 4, 68, L"0x%x", NULL, NULL, NULL, NULL},\r
	103	\r
	104	{L"Non-Secure EL2 timer GSIV", 4, 72, L"0x%x", NULL, NULL, NULL, NULL},\r
	105	{L"Non-Secure EL2 timer FLAGS", 4, 76, L"0x%x", NULL, NULL, NULL, NULL},\r
	106	\r
	107	{L"CntReadBase Physical address", 8, 80, L"0x%lx", NULL, NULL, NULL, NULL},\r
	108	{L"Platform Timer Count", 4, 88, L"%d", NULL,\r
	109	(VOID**)&GtdtPlatformTimerCount, NULL, NULL},\r
	110	{L"Platform Timer Offset", 4, 92, L"0x%x", NULL,\r
98f98eb4 PG	111	(VOID**)&GtdtPlatformTimerOffset, NULL, NULL},\r
	112	{L"Virtual EL2 Timer GSIV", 4, 96, L"0x%x", NULL, NULL, NULL, NULL},\r
	113	{L"Virtual EL2 Timer Flags", 4, 100, L"0x%x", NULL, NULL, NULL, NULL}\r
ee4dc24f RN	114	};\r
ee4dc24f RN	115	\r
a6eaba4d DB	116	/**\r
	117	An ACPI_PARSER array describing the Platform timer header.\r
	118	**/\r
ee4dc24f RN	119	STATIC CONST ACPI_PARSER GtPlatformTimerHeaderParser[] = {\r
	120	{L"Type", 1, 0, NULL, NULL, (VOID**)&PlatformTimerType, NULL, NULL},\r
	121	{L"Length", 2, 1, NULL, NULL, (VOID**)&PlatformTimerLength, NULL, NULL},\r
	122	{L"Reserved", 1, 3, NULL, NULL, NULL, NULL, NULL}\r
	123	};\r
	124	\r
a6eaba4d DB	125	/**\r
	126	An ACPI_PARSER array describing the Platform GT Block.\r
	127	**/\r
ee4dc24f RN	128	STATIC CONST ACPI_PARSER GtBlockParser[] = {\r
	129	{L"Type", 1, 0, L"%d", NULL, NULL, NULL, NULL},\r
	130	{L"Length", 2, 1, L"%d", NULL, (VOID**)&GtBlockLength, NULL, NULL},\r
	131	{L"Reserved", 1, 3, L"%x", NULL, NULL, NULL, NULL},\r
	132	{L"Physical address (CntCtlBase)", 8, 4, L"0x%lx", NULL, NULL, NULL, NULL},\r
	133	{L"Timer Count", 4, 12, L"%d", NULL, (VOID**)&GtBlockTimerCount,\r
	134	ValidateGtBlockTimerCount, NULL},\r
	135	{L"Timer Offset", 4, 16, L"%d", NULL, (VOID**)&GtBlockTimerOffset, NULL,\r
	136	NULL}\r
	137	};\r
	138	\r
a6eaba4d DB	139	/**\r
	140	An ACPI_PARSER array describing the GT Block timer.\r
	141	**/\r
ee4dc24f	142	STATIC CONST ACPI_PARSER GtBlockTimerParser[] = {\r
8da8daaf	143	{L"Frame Number", 1, 0, L"%d", NULL, NULL, ValidateGtFrameNumber, NULL},\r
ee4dc24f RN	144	{L"Reserved", 3, 1, L"%x %x %x", Dump3Chars, NULL, NULL, NULL},\r
	145	{L"Physical address (CntBaseX)", 8, 4, L"0x%lx", NULL, NULL, NULL, NULL},\r
	146	{L"Physical address (CntEL0BaseX)", 8, 12, L"0x%lx", NULL, NULL, NULL,\r
	147	NULL},\r
	148	{L"Physical Timer GSIV", 4, 20, L"0x%x", NULL, NULL, NULL, NULL},\r
	149	{L"Physical Timer Flags", 4, 24, L"0x%x", NULL, NULL, NULL, NULL},\r
	150	{L"Virtual Timer GSIV", 4, 28, L"0x%x", NULL, NULL, NULL, NULL},\r
	151	{L"Virtual Timer Flags", 4, 32, L"0x%x", NULL, NULL, NULL, NULL},\r
	152	{L"Common Flags", 4, 36, L"0x%x", NULL, NULL, NULL, NULL}\r
	153	};\r
	154	\r
a6eaba4d DB	155	/**\r
	156	An ACPI_PARSER array describing the Platform Watchdog.\r
	157	**/\r
ee4dc24f RN	158	STATIC CONST ACPI_PARSER SBSAGenericWatchdogParser[] = {\r
	159	{L"Type", 1, 0, L"%d", NULL, NULL, NULL, NULL},\r
	160	{L"Length", 2, 1, L"%d", NULL, NULL, NULL, NULL},\r
	161	{L"Reserved", 1, 3, L"%x", NULL, NULL, NULL, NULL},\r
	162	{L"RefreshFrame Physical address", 8, 4, L"0x%lx", NULL, NULL, NULL, NULL},\r
	163	{L"ControlFrame Physical address", 8, 12, L"0x%lx", NULL, NULL, NULL, NULL},\r
	164	{L"Watchdog Timer GSIV", 4, 20, L"0x%x", NULL, NULL, NULL, NULL},\r
	165	{L"Watchdog Timer Flags", 4, 24, L"0x%x", NULL, NULL, NULL, NULL}\r
	166	};\r
	167	\r
a6eaba4d DB	168	/**\r
a6eaba4d DB	169	This function parses the Platform GT Block.\r
ee4dc24f RN	170	\r
	171	@param [in] Ptr Pointer to the start of the GT Block data.\r
	172	@param [in] Length Length of the GT Block structure.\r
a6eaba4d	173	**/\r
ee4dc24f RN	174	STATIC\r
	175	VOID\r
	176	DumpGTBlock (\r
	177	IN UINT8* Ptr,\r
68bef3f0	178	IN UINT32 Length\r
ee4dc24f RN	179	)\r
	180	{\r
	181	UINT32 Index;\r
	182	UINT32 Offset;\r
68bef3f0	183	UINT32 GTBlockTimerLength;\r
ee4dc24f RN	184	\r
	185	Offset = ParseAcpi (\r
	186	TRUE,\r
	187	2,\r
	188	"GT Block",\r
	189	Ptr,\r
	190	Length,\r
	191	PARSER_PARAMS (GtBlockParser)\r
	192	);\r
	193	GTBlockTimerLength = (GtBlockLength - Offset) / (GtBlockTimerCount);\r
	194	Length -= Offset;\r
	195	\r
	196	if (*GtBlockTimerCount != 0) {\r
	197	Ptr += (*GtBlockTimerOffset);\r
	198	Index = 0;\r
	199	while ((Index < (*GtBlockTimerCount)) && (Length >= GTBlockTimerLength)) {\r
	200	Offset = ParseAcpi (\r
	201	TRUE,\r
	202	2,\r
	203	"GT Block Timer",\r
	204	Ptr,\r
	205	GTBlockTimerLength,\r
	206	PARSER_PARAMS (GtBlockTimerParser)\r
	207	);\r
	208	// Increment by GT Block Timer structure size\r
	209	Ptr += Offset;\r
	210	Length -= Offset;\r
	211	Index++;\r
	212	}\r
	213	\r
	214	if (Length != 0) {\r
	215	IncrementErrorCount ();\r
	216	Print (\r
	217	L"ERROR:GT Block Timer length mismatch. Unparsed %d bytes.\n",\r
	218	Length\r
	219	);\r
	220	}\r
	221	}\r
	222	}\r
	223	\r
a6eaba4d DB	224	/**\r
a6eaba4d DB	225	This function parses the Platform Watchdog timer.\r
ee4dc24f RN	226	\r
	227	@param [in] Ptr Pointer to the start of the watchdog timer data.\r
	228	@param [in] Length Length of the watchdog timer structure.\r
a6eaba4d	229	**/\r
ee4dc24f RN	230	STATIC\r
	231	VOID\r
	232	DumpWatchdogTimer (\r
	233	IN UINT8* Ptr,\r
	234	IN UINT16 Length\r
	235	)\r
	236	{\r
	237	ParseAcpi (\r
	238	TRUE,\r
	239	2,\r
	240	"SBSA Generic Watchdog",\r
	241	Ptr,\r
	242	Length,\r
	243	PARSER_PARAMS (SBSAGenericWatchdogParser)\r
	244	);\r
	245	}\r
	246	\r
a6eaba4d DB	247	/**\r
a6eaba4d DB	248	This function parses the ACPI GTDT table.\r
ee4dc24f RN	249	When trace is enabled this function parses the GTDT table and\r
	250	traces the ACPI table fields.\r
	251	\r
	252	This function also parses the following platform timer structures:\r
	253	- GT Block timer\r
	254	- Watchdog timer\r
	255	\r
	256	This function also performs validation of the ACPI table fields.\r
	257	\r
	258	@param [in] Trace If TRUE, trace the ACPI fields.\r
	259	@param [in] Ptr Pointer to the start of the buffer.\r
	260	@param [in] AcpiTableLength Length of the ACPI table.\r
	261	@param [in] AcpiTableRevision Revision of the ACPI table.\r
a6eaba4d	262	**/\r
ee4dc24f RN	263	VOID\r
	264	EFIAPI\r
	265	ParseAcpiGtdt (\r
	266	IN BOOLEAN Trace,\r
	267	IN UINT8* Ptr,\r
	268	IN UINT32 AcpiTableLength,\r
	269	IN UINT8 AcpiTableRevision\r
	270	)\r
	271	{\r
	272	UINT32 Index;\r
	273	UINT8* TimerPtr;\r
	274	\r
	275	if (!Trace) {\r
	276	return;\r
	277	}\r
	278	\r
	279	ParseAcpi (\r
	280	TRUE,\r
	281	0,\r
	282	"GTDT",\r
	283	Ptr,\r
	284	AcpiTableLength,\r
	285	PARSER_PARAMS (GtdtParser)\r
	286	);\r
	287	\r
	288	if (*GtdtPlatformTimerCount != 0) {\r
	289	TimerPtr = Ptr + (*GtdtPlatformTimerOffset);\r
	290	Index = 0;\r
	291	do {\r
	292	// Parse the Platform Timer Header\r
	293	ParseAcpi (\r
	294	FALSE,\r
	295	0,\r
	296	NULL,\r
	297	TimerPtr,\r
	298	4, // GT Platform Timer structure header length.\r
	299	PARSER_PARAMS (GtPlatformTimerHeaderParser)\r
	300	);\r
	301	switch (*PlatformTimerType) {\r
	302	case EFI_ACPI_6_2_GTDT_GT_BLOCK:\r
	303	DumpGTBlock (TimerPtr, *PlatformTimerLength);\r
	304	break;\r
	305	case EFI_ACPI_6_2_GTDT_SBSA_GENERIC_WATCHDOG:\r
	306	DumpWatchdogTimer (TimerPtr, *PlatformTimerLength);\r
	307	break;\r
	308	default:\r
	309	IncrementErrorCount ();\r
	310	Print (\r
	311	L"ERROR: INVALID Platform Timer Type = %d\n",\r
	312	*PlatformTimerType\r
	313	);\r
	314	break;\r
	315	} // switch\r
	316	TimerPtr += (*PlatformTimerLength);\r
	317	Index++;\r
	318	} while (Index < *GtdtPlatformTimerCount);\r
	319	}\r
	320	}\r